So I just started with the PCSX2 today, and upon trying it for the first time, games have been running normally for the past 4 hours. During the middle of a game (FFX-2), the FPS shot up to around 100 and the game was running on fast forward. I've tried a few other games, and the same thing happens, except it will go to upwards of 288FPS.

Frame limiting is NOT disabled, nor has it ever been (I did not accidentally toggle it during a game).
All the default settings are still as they were (100, 50, 200).

How can I tweak this to slow it down? I'm out of luck, as google and the forums have been no help to me (from what I could even dig out from the depths of the internet).